期刊论文

Research on brown rice mechanics experimental with cohesion model

中文

武汉轻工大学学报

2095-7386

2023

42

01

50-56

10.3969/j.issn.2095-7386.2023.01.008

Q20211609:湖北省教育厅科研项目 2019RZ08:武汉轻工大学博士启动科研 2020J06:武汉轻工大学校***科研项目 FM-202103:江苏省食品先进制造重点实验室开放基金

本校为第一机构

为了降低大米加工过程中的碎米率，需要对大米的损伤机理进行研究。通过径向压缩试验获取了糙米的抗拉强度和弹性模量，进一步分析了糙米在径向压缩准静态实验下米粒裂纹的形成、演化与破碎机理。基于Abaqus内聚力模型建立了糙米的损伤有限元模型，并通过压缩试验台对仿真结果进行了验证。结果表明，糙米的断裂损伤符合最大拉应力失效理论，径向压缩实验获得的抗拉强度和弹性模量在研究糙米损伤模型中的适用程度较高，内聚力模型在研究糙米损伤方面具有良好的适用性，为后续通过有限元研究碾白、抛光等加工过程中的破碎机理提供了参考。

In order to reduce rice broken rate during processing,the rice damage mechanism needs to be studied.The brown rice tensile strength and elastic modulus were obtained by diametrical compression test,and the crack formation,evolution and crushing mechanism under quasi-sta...MORE In order to reduce rice broken rate during processing,the rice damage mechanism needs to be studied.The brown rice tensile strength and elastic modulus were obtained by diametrical compression test,and the crack formation,evolution and crushing mechanism under quasi-static test of diametrical compression were further ana...